Road scraper



2 SheetsSheet 1. I M. E. 000K. RUAD SGR'APBE.

(No Model.)

Patented Mar. 2.2, 1887 N PETERS. muulm m mn Washingtan n c UNITED STATES PATENT @rrrca MARCUS E. COOK, OF \VALLlNGFOR-D, OONNEGTIGUT, ASSIGNOR TO THE AMERICAN ROAD MACHINE COMPANY, OF KENNETT SQUARE, PA.

RoAo-soRAPER.

EPECIFICATIQN forming part of Letters Patent No. 359,849, dated March 22, 1887.

Application filed May 19, 1886. Serial No. 202,614. (No model.)

To all whom it 12mg concern:

Be it known that I, Masons E. 0001;, of Vallingford, in the county of New Haven and State of Connecticut, have invented a new Improvement in Road-Scrapers; and I do hereby declare the following, when taken in connection with accompanying drawings,and the let ters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in

Figure 1, a top or plan view; Fig. 2, aside view, part broken away; Fig. 3, a side View of one of the hangers, showing an end view of the scraper; Fig. l, an edge View of one of the adjusting levers; Fig. 5, a detached view showing locking device for the scraper.

This invention relates to an improvement in the machines commonly called road-scrap ers-that is to say, a carriage arranged upon wheels, carrying a scraper, made adjustable as to its elevation an d also adjustable to different angles to the path of movement of the carriage, and so that as the carriage is drawn over the surface the scraper will serve to level, grade, or even that surfaceand particularly to that class in which the carriage consists of a frame supported upon a pair of wheels at the rear and upon a corresponding pair at the front, the animals being attached to the axle at the front and the scraper supported and made adjust-able between the front and rear wheels, the object of the invention being to make the scraper readily adjustable to different elevations, and also to make the scraper convertible from a right to a left hanc --that is to say, so that the scraper may be turned either edge down to the work; and the invention consists in the construction as hereinafter described, and more particularly recited in the claims.

A represents the rear axle, to which a pair of wheels, B B, are applied; (3, the forward axle, to which the forward wheels, D D, are applied in the usual manner for this class of machines, the forward axle being adapted for the attachment of the animals which are to propel the machine, which attachment (not shown) may be of any known or convenient character.

E is the frame, which is best made from iron,

and consists of two sides, their rear ends fixed to the rear axle and, extending forward, terminate near the center of the forward axle, with which they are connected, so as to permit the forward axle to turn freely in giving direction to the path of the machine.

F G are two substantially-flat segments beneath the frame, the two segments at each end terminating in similar arms, H. The said arms, extending inward, are hung to brackets I, extending downward from the frame, and upon pivots a, so that the two segments are adapted to be raised or lowered toward or from the frame, as may be required. The two segments are parts of a circle, the center of which is common to both,and may be represented as at 11, these segments being designed to form the track upon which the scraper shall be adjusted to its various angles and by which it may be adjusted vertically.

To the rear segment, F, a vertical toothed rack,J,is hung by means of a link. K, the rack extending up through a gnide,L,in the frame, and into the teeth of which a geargMIhung on the frame, works, and upon the shaft of the gear M, or concentric therewith, a lever,N,is hung, so as to turnfreely upon the axle of the gear, and in the lever a dog, cl,' is arranged to move radially toward or from the teeth of the gear and adapted to engage the teeth of the gear at any point at which it may stand. This dog is operated by a l1and-lever,e,hung upon the lever N,(see Fig. 4,) and so that the operator by turning the said lever may draw the dog from the teeth of the gear, thereby leaving the lever free to turn independent of the gear, but permitting the dog to engage the teeth of the gear. The gear will be turned with the lever and so that the operator, thus turning the lever in one direction, may raise the rack J and with it the segment F,connected thereto, or, moved in the opposite direction, the rack and segment will be lowered accordingly. This dog-connection of the gear is a common and well-known device for engaging a hand-lever with a toothed gear, whereby rotation may be imparted to the gear in either direction. To the forward segment,G,a like rack,O,is hung by a link, P, the rack arranged in the vertical guide R in the frame, and in connection with ICO v is hung by means of a pivot, r ,at each hanger.

These pivots are upon the back side of the scraper,and should be midway of its height. The forward surface of the scraper is curved substantially alike both sides of the center, and so as to make the frontsurfacc concave in vertical secti0n,as seen in Fig. 4. 1hescraper,b'eing hung to the pivots g, is adapted to be turned thereon, so as to bring either edge up,

say, as from the position seen in solid lines,

Fig. 3, to broken lines in the same figure. The hangers U,thus carrying the scraper,may be turned or moved upon therespective segments in either direction, and so as to carry the respective ends of the scraper accordingly, and sothat the scraper may be held, say, in a direct longitudinal line, assecn in Fig. 1, which is its inoperative condition or turned to either side, as indicated by the broken lines av y in Fig. 1, or to any intermediate position. The hangers are supported by the segments so as to permitsuch rotative movement as to adjust the scraper to the various angles required. Each hanger is provided with a locking-dog, 71, adapted to engage corresponding notches in their respective segmentaand so that the hang ers may be locked to hold the scraper when set to any desired position. YVhen the scraper stands in the position of line X, Fig. 1, and facing toward the forward wheels, ifthe scraper then be adjusted to take the position of the broken line Y the reverse side of the scraper would be presented. If, therefore,the scraper be set, say,onthe lineX X,and it be desired to change it in the opposite direction, then the scraper is inverted, as indicated in Fig. 3, and so as to bring the other edge of the scraper downward and preserve the concave or face side of the scraper forward. In either position the scraper should be locked, so as to prevent its accident-ally turning. To this end, each hanger is provided with a securing device-say in the form of a latch, as seen in Fig. 5-1 representing the bolt to engage one edge, and Z to engage the other edge. The bolt may be a spring-bolt, as represented, or otherwise, to securely hold the scraper whichever edge may be upward,and yet permit the scraper to be turned as occasion may require.

To adjust the scraper to different elevations bodily, or at either end, the wheels M S are turned accordingly to raise or lower the respective segments, which segments, carrying the hangers, rise with the segments and correspondingly raise the scraper. Each rack is provided with a locking-dog, m, to engage it at any point of elevation to which it may be adjusted. This dog is preferably a springdog, as shown, and is conncctedwith a footpedal, a, so that the operator, standing uponyo the floor r of the frame, may, by placing his foot upon the pedal, release the rack accordingly.

In operatic n, when the scraper stands at an angle, the tendency of the work is to throw the rear wheels or rear end of the machine to the side away from the workingface of the scraper. To avoid this lateral or sidewise movement of the rear part of the frame, I provide a pair of resistance-wheels, 88, preferably arranged upon the end of a roller, t, hung at the rear between the two rear wheels. These resistance'wheels presenta series of blade-like teeth, u, which will readily enter the earth as the apparatus advances, and, taking a strong hold in the earth, will prevent the lateral. movement referredto and cause the rear wheels to properly follow. the forward wheels and maintain the scraper in its proper path. The resistance wheels .9 s are hung to levers w in the=frame,

the said levers extending toward the center,

one upon each side, and for each lever a segment, 3, is fixed to the frame, the segment toothed upon one edge and the levers each provided with a spring locking-dog, 4, similar to 9 5 the dogsd of the levers N, and operated in like manner by a lever, 5, hung to the levers W, so that vthe resistance-wheels may be ad-i justed up or down to take a greater or less hold in the earth, or be raised out of contact with -the earth, as may be desirable.

The roller it between the resistance-wheels may be employed for rolling the surface over which the scraper has passed. The roller it- 1 self maybe employed as the resistance without the necessary application of the teeth thereto-that is to say, the roller being adj ustable, so that either end may be raised and the other lowered, the one end opposite the face i of the scraper at work being lowered and the r to other raised, so as to give an inclination tothe scraper and so that the lower end may work into the earth, the end of the roller itself will form a sufiicient resistance to lateral movement and holdthe rear part of the frame in .115 its direct line.

I claim 1. In a road-scraper, the combination of a frame carried by wheels, a pair of segments, F G, hung to said frame, one forward of andthe other at'the rear of a center common to both, and the said segments adapted to swing up and 1 down beneath the frame, a scraper supported by said segments and adjustable thereon to different angles with relation to thepath of the moving frame, substantially as described.

2. In a road-scraper, the combination of a 1 frame supported upon wheels, a pair of segments, F G, hung to said frame, one forward of and the other at the rearof a center com- :30 mon to both, and the said segments adapted to swing up and down beneath the frame,a hanger,

U, arranged uponeach of said segments and 1 adapted to slide thereon around said common center, thescraper \V, hung to the said hangers, substantially'as described, and whereby said scraper is adapted to be inverted to present either edge to the earth.

3. The combination of a frame supported upon wheels at the rear and wheels at the front, a pair of segments, F G, hung to the said frame, one forward of and the other at the rear of a center common to both, verticallyguidcd racks J 0, respectively hung to the said segments, a gear hung upon the frame at each rack and so as to engage the teeth thereof, a hand-lever hung upon the axis of each of said gears, and each of said levers provided with a dog arranged to engage the teeth of the said wheel, with a scraper hung to said segments and adj nstable thereon to different angles,substantially as described.

4. The combination of a frame supported upon wheels at the rear and upon wheels at the front, segments F G, hung to the frame between the rear and forward wheels, one forward of and the other in rear of a center common to both, and the said segments adapted to swing up and down beneath the frame,ascraper hung upon said segments and so as to turn thereon to different angles, the said segments provided with a series of notches, and the scraper with corresponding dogs, by which the said scraper may be interlocked with the said segments, substantially as described.

5. The combination of a frame supported upon wheels at the front and rear, segment-sh G, hung to said frame between the rear and forward wheels, one forward of and the other in rear of a center common to both, and the said segments adapted to swing up and down beneath the frame, the hangers U, upon each of said segments and adapted to slide thereon, a scraper, \V, hung to said hangers and so as to be turned either edge up, and with a lock to engage the said hangers and scraperin either position, substantially as described.

6. The combination ofa frame arranged upon wheels at the rear-and upon wheels at the front, a scraper hung to the frame between said wheels, with a roller in rear of said scraper, the said roller provided with one or more resistancewheels, s, substantially as and for the purpose described.

'7. The combination of a frame arranged upon wheels at the rear and upon wheels at the front, a scraper hung totheframe between the wheels, a roller in rear of the scraper and hung to ad justing-levers on the frame, substantially as described, and whereby the said roller may be raised or lowered.

MARCUS E. COOK.-

Vitnesses:

J OHN E. EARLE, FRED C. EARLE. 

